sci
hub

to open science
Otilia Mó, Manuel Yáñez, Ibon Alkorta, José Elguero. (2013). Enhancing and modulating the intrinsic acidity of imidazole and pyrazole through beryllium bonds. , 19(10), 4139–4145. doi:10.1007/s00894-012-1682-y 
10.1007/s00894-012-1682-y